As Tokugawa Ieyasu wakes up in the modern world, she becomes instantly astounded by an idol named Rosary. Wanting to sing and dance like her, Ieyasu is picked up by a talent agency who start training her to become an idol. As Ieyasu has doubts about whether she can do this, the producer takes her to see Rosary, showing how she never gave up, convincing Ieyasu to keep trying. As Ieyasu makes her debut as an idol, she ends up becoming more popular than Rosary, which leads her to become bitter towards her...